Oceanic basin

Imagine the Earth is like a big ball with lots of different bumps and valleys on its surface. One of the places where it dips down is the ocean floor. "Oceanic basin" is what we call this sunken part of the Earth's crust that's covered in water, kind of like a giant bowl that's full of ocean water.

An oceanic basin is formed when liquid rock (called magma) rises up from deep within the Earth and spreads out in different directions, like when you pour syrup on a pancake. This causes the Earth's crust (like the top layer of the pancake) to shift and crack, and new rock forms underneath the ocean water.

By looking at the rocks and studying how they formed, scientists can learn a lot about the history of the ocean floor and how it has changed over time. The oceanic basin is also home to many different plants and animals, some of which we haven't even discovered yet.